Calexico weather in December

In December, Calexico sees average daytime highs of 70°F and overnight lows near 47°F, with 0.4 in of rain across 1.5 wet days and about 9.9 hours of daylight. It is the 12th-warmest and 3rd-wettest month of the year here.

Highs ease over the month, from about 72°F in the first days to 69°F by the end. The sky is clear or mostly clear about 63% of the time in December, and the air most often feels dry.

Daylight stretches from about 10 hours at the start of December to 9 h 54 min by month's end. Set against the rest of the year, December is Calexico's 10th-clearest and 10th-windiest month. For the whole year in context, see Calexico's year-round climate.

Daytime high: 70°; 12th warmest
Overnight low: 47°; 1st coldest
Rainfall: 0.4 in; 1.5 wet days
Daylight: 9 h 54 min; 6:42 AM – 4:34 PM
Cloud cover: 33%; 10th clearest
Wind: 4 mph; 10th windiest
Solar energy: 3.33 kWh/m²
Travel score: 8.2; out of 10

Calexico is city in Imperial County, California, United States.

Density: 1,843/km²; people per km²
Founded: 1908

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

← November Calexico year-round climate January →Best places to visit in December

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 72°F in the first days to 69°F by the end.

A typical December day in Calexico reaches about 70°F in the afternoon and slips back to 47°F overnight — a 23°F spread between the day's warmth and the night's chill. On most days the high lands between 62°F and 77°F. Set against its neighbours, December runs about 9°F cooler than November and about 2°F cooler than January.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Avg high (°F)	72	72	72	72	71	71	71	71	71	70	70	70	70	70	69	69	69	69	69	69	69	69	69	68	68	68	69	69	69	69	69
Avg low (°F)	49	49	49	48	48	48	48	48	47	47	47	47	47	47	47	47	46	46	46	46	46	46	46	46	46	46	46	46	46	46	46

	Avg high (°F)	Avg low (°F)
1	72	49
2	72	49
3	72	49
4	72	48
5	71	48
6	71	48
7	71	48
8	71	48
9	71	47
10	70	47
11	70	47
12	70	47
13	70	47
14	70	47
15	69	47
16	69	47
17	69	46
18	69	46
19	69	46
20	69	46
21	69	46
22	69	46
23	69	46
24	68	46
25	68	46
26	68	46
27	69	46
28	69	46
29	69	46
30	69	46
31	69	46

How December really feels in Calexico

Once humidity and wind are folded in, December averages 0 days that feel above 90°F and 0 that feel at or below 32°F — the comfort signal a plain temperature reading hides.

Days feeling ≥ 90°F

heat index over the day's high

Days feeling ≤ 32°F

wind chill below the day's low

December sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Calexico weather by month

How December compares with the rest of the year at a glance. December is the 12th-warmest and 3rd-wettest month here — the current month is highlighted below.

Month	High / Low (°F)	Rainfall (inches)	Wet days	Daylight (hours)	Travel score
Jan	71° / 48°	0.4	1.7	10.1	8.4
Feb	75° / 50°	0.5	2	10.8	8.7
Mar	82° / 54°	0.3	1.1	11.8	7.9
Apr	88° / 59°	0.1	0.5	12.8	5.8
May	96° / 66°	0.0	0.2	13.7	3.1
Jun	104° / 73°	0.0	0	14.1	0.4
Jul	109° / 81°	0.2	1.5	13.9	0.0
Aug	108° / 82°	0.3	2.5	13.2	0.0
Sep	102° / 75°	0.4	1.4	12.2	0.8
Oct	91° / 64°	0.2	0.7	11.2	4.8
Nov	79° / 53°	0.2	0.6	10.3	8.6
Dec	70° / 47°	0.4	1.5	9.9	8.2

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 63% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 12% of December, with mostly cloudy or overcast conditions the remaining 25%.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Clearer (%)	77	77	77	77	77	76	76	76	76	77	77	77	77	76	76	76	75	76	76	76	75	75	75	74	74	74	72	73	73	72	72
Cloudier (%)	23	23	23	23	23	24	24	24	24	23	23	23	23	24	24	24	25	24	24	24	25	25	25	26	26	26	28	27	27	28	28

	Clearer (%)	Cloudier (%)
1	77	23
2	77	23
3	77	23
4	77	23
5	77	23
6	76	24
7	76	24
8	76	24
9	76	24
10	77	23
11	77	23
12	77	23
13	77	23
14	76	24
15	76	24
16	76	24
17	75	25
18	76	24
19	76	24
20	76	24
21	75	25
22	75	25
23	75	25
24	74	26
25	74	26
26	74	26
27	72	28
28	73	27
29	73	27
30	72	28
31	72	28

Chance of precipitation in December

Any precipitation

Calexico gets around 0.4 in of rain over 1.5 wet days in December. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 5% and peaks near 6% on the wettest days.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Rain chance (%)	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	6	6	6	6

	Rain chance (%)
1	5
2	5
3	5
4	5
5	5
6	5
7	5
8	5
9	5
10	5
11	5
12	5
13	5
14	5
15	5
16	5
17	5
18	5
19	5
20	5
21	5
22	5
23	5
24	5
25	5
26	5
27	5
28	6
29	6
30	6
31	6

Humidity in December

DryComfortableHumidMuggyOppressiveMiserable

Most of December feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, December lands in the dry band about 100% of days. It rarely turns muggy — the humid and sticky bands barely register.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Dry (%)	99	99	99	99	99	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100
Comfortable (%)	1	1	1	1	1	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0

	Dry (%)	Comfortable (%)
1	99	1
2	99	1
3	99	1
4	99	1
5	99	1
6	100	0
7	100	0
8	100	0
9	100	0
10	100	0
11	100	0
12	100	0
13	100	0
14	100	0
15	100	0
16	100	0
17	100	0
18	100	0
19	100	0
20	100	0
21	100	0
22	100	0
23	100	0
24	100	0
25	100	0
26	100	0
27	100	0
28	100	0
29	100	0
30	100	0
31	100	0

Wind in December

Winds average 4 mph in December.

Across December, daily wind ranges from about 4 mph on the calmest days to 5 mph at its breeziest. It stays fairly steady from day to day.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Wind speed (mph)	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	4	4	4	4	4	4	4	4	4
Feels	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm

	Wind speed (mph)	Feels
1	5	calm
2	5	calm
3	5	calm
4	5	calm
5	5	calm
6	5	calm
7	5	calm
8	5	calm
9	5	calm
10	5	calm
11	5	calm
12	5	calm
13	5	calm
14	5	calm
15	5	calm
16	5	calm
17	5	calm
18	5	calm
19	5	calm
20	5	calm
21	5	calm
22	5	calm
23	4	calm
24	4	calm
25	4	calm
26	4	calm
27	4	calm
28	4	calm
29	4	calm
30	4	calm
31	4	calm

Sunrise & sunset in December

DaylightNight

Daylight runs from about 10 hours at the start of December to 9 h 54 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 6 minutes over December. Sunrise moves from 6:32 AM to 6:49 AM, and sunset from 4:32 PM to 4:41 PM.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Daylight (h)	10.0	10.0	10.0	10.0	10.0	9.9	9.9	9.9	9.9	9.9	9.9	9.9	9.9	9.9	9.9	9.9	9.9	9.9	9.9	9.8	9.8	9.8	9.8	9.8	9.9	9.9	9.9	9.9	9.9	9.9	9.9
Sunrise (AM)	6:32	6:32	6:33	6:34	6:35	6:36	6:36	6:37	6:38	6:38	6:39	6:40	6:40	6:41	6:42	6:42	6:43	6:44	6:44	6:45	6:45	6:46	6:46	6:46	6:47	6:47	6:48	6:48	6:48	6:49	6:49
Sunset (PM)	4:32	4:32	4:32	4:32	4:32	4:32	4:32	4:32	4:32	4:32	4:33	4:33	4:33	4:33	4:34	4:34	4:34	4:35	4:35	4:35	4:36	4:36	4:37	4:37	4:38	4:38	4:39	4:40	4:40	4:41	4:41

	Daylight (h)	Sunrise (AM)	Sunset (PM)
1	10.0	6:32	4:32
2	10.0	6:32	4:32
3	10.0	6:33	4:32
4	10.0	6:34	4:32
5	10.0	6:35	4:32
6	9.9	6:36	4:32
7	9.9	6:36	4:32
8	9.9	6:37	4:32
9	9.9	6:38	4:32
10	9.9	6:38	4:32
11	9.9	6:39	4:33
12	9.9	6:40	4:33
13	9.9	6:40	4:33
14	9.9	6:41	4:33
15	9.9	6:42	4:34
16	9.9	6:42	4:34
17	9.9	6:43	4:34
18	9.9	6:44	4:35
19	9.9	6:44	4:35
20	9.8	6:45	4:35
21	9.8	6:45	4:36
22	9.8	6:46	4:36
23	9.8	6:46	4:37
24	9.8	6:46	4:37
25	9.9	6:47	4:38
26	9.9	6:47	4:38
27	9.9	6:48	4:39
28	9.9	6:48	4:40
29	9.9	6:48	4:40
30	9.9	6:49	4:41
31	9.9	6:49	4:41

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 3.33 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 3.33 kWh/m² to a high of 8.52 kWh/m² in June across the year — December's 3.33 kWh/m² sits near the bottom.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Solar energy (kWh/m²)	3.5	3.4	3.4	3.4	3.4	3.4	3.3	3.3	3.3	3.3	3.3	3.3	3.3	3.3	3.3	3.3	3.3	3.3	3.3	3.3	3.3	3.3	3.3	3.3	3.3	3.3	3.4	3.4	3.4	3.4	3.4
Level	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate

	Solar energy (kWh/m²)	Level
1	3.5	Moderate
2	3.4	Moderate
3	3.4	Moderate
4	3.4	Moderate
5	3.4	Moderate
6	3.4	Moderate
7	3.3	Moderate
8	3.3	Moderate
9	3.3	Moderate
10	3.3	Moderate
11	3.3	Moderate
12	3.3	Moderate
13	3.3	Moderate
14	3.3	Moderate
15	3.3	Moderate
16	3.3	Moderate
17	3.3	Moderate
18	3.3	Moderate
19	3.3	Moderate
20	3.3	Moderate
21	3.3	Moderate
22	3.3	Moderate
23	3.3	Moderate
24	3.3	Moderate
25	3.3	Moderate
26	3.3	Moderate
27	3.4	Moderate
28	3.4	Moderate
29	3.4	Moderate
30	3.4	Moderate
31	3.4	Moderate

Planning a trip in December

Is December a good time to visit Calexico?

Our two travel scores rate December for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

8.2

Sightseeing

4th-best month of the year

5.1

Beach & pool

8th-best month of the year

December is one of the better times to visit Calexico for general sightseeing.

What to pack for Calexico in December

From December's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In December, Calexico sees daytime highs around 70°F and nights near 47°F. Little to plan around — just the basics.

UV index in Calexico in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 3. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Calexico peaks around June 21 at about 11 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 18 at about 3 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 11 months of the year.

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
UV index (midday)	4	5	5	8	8	11	10	10	8	6	4	3
Level	Moderate	Moderate	Moderate	Very high	Very high	Extreme	Extreme	Extreme	Very high	High	Moderate	Moderate

	UV index (midday)	Level
Jan	4	Moderate
Feb	5	Moderate
Mar	5	Moderate
Apr	8	Very high
May	8	Very high
Jun	11	Extreme
Jul	10	Extreme
Aug	10	Extreme
Sep	8	Very high
Oct	6	High
Nov	4	Moderate
Dec	3	Moderate

Location & terrain

Where is Calexico?

Calexico sits at 32.7°N, 115.5°W, 3 ft above sea level, in United States. The nearest listed city is Mexicali, 4.3 mi away.

Topography around Calexico

How much the land rises and falls, and what covers it, within 2, 10 and 50 miles of Calexico.

Within 2 miles, the terrain around Calexico has only modest variations in elevation — a maximum elevation change of 79 ft around an average of 3 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 144 ft; within 50 miles, very significant variations in elevation — a maximum elevation change of 6,309 ft.

The land around Calexico is covered by artificial surfaces (51%) and bare terrain (30%) within 2 miles, cropland (47%), bare terrain (25%) and artificial surfaces (22%) within 10 miles, and bare terrain (57%) and cropland (20%) within 50 miles.

2 miles

79 ft

artificial surfaces 51%

10 miles

144 ft

cropland 47%

50 miles

6,309 ft

bare terrain 57%

treesshrubsgrasslandcroplandartificial surfacesbare terrainwater

← November Calexico year-round climate January →Best places to visit in December

December weather nearby: Mexicali 4.3 mi · Santa Isabel 5.6 mi · El Centro 8.7 mi · Puebla 11 mi · Imperial 12 mi · Brawley 21 mi · Ciudad Guadalupe Victoria 35 mi · San Luis 43 mi

United States travel facts

Power plugs: Type A / B; 120 V · 60 Hz
Prices: ≈ 100% of US; price level, 2025
GDP per capita: $90,027; 2025
Happiness: 6.8 / 10; World Happiness, 2025
Safe drinking water: 98%; of population, 2024
Homicide rate: 5.8; per 100k, 2023
Road deaths: 12.7; per 100k/yr, 2019
Income group: High; World Bank
Religion

Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.

Data sources

Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Calexico (32.679°, -115.4989°, elevation 3 ft), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).

	Avg high (°F)	Avg low (°F)
1	72	49
2	72	49
3	72	49
4	72	48
5	71	48
6	71	48
7	71	48
8	71	48
9	71	47
10	70	47
11	70	47
12	70	47
13	70	47
14	70	47
15	69	47
16	69	47
17	69	46
18	69	46
19	69	46
20	69	46
21	69	46
22	69	46
23	69	46
24	68	46
25	68	46
26	68	46
27	69	46
28	69	46
29	69	46
30	69	46
31	69	46

	Clearer (%)	Cloudier (%)
1	77	23
2	77	23
3	77	23
4	77	23
5	77	23
6	76	24
7	76	24
8	76	24
9	76	24
10	77	23
11	77	23
12	77	23
13	77	23
14	76	24
15	76	24
16	76	24
17	75	25
18	76	24
19	76	24
20	76	24
21	75	25
22	75	25
23	75	25
24	74	26
25	74	26
26	74	26
27	72	28
28	73	27
29	73	27
30	72	28
31	72	28

	Rain chance (%)
1	5
2	5
3	5
4	5
5	5
6	5
7	5
8	5
9	5
10	5
11	5
12	5
13	5
14	5
15	5
16	5
17	5
18	5
19	5
20	5
21	5
22	5
23	5
24	5
25	5
26	5
27	5
28	6
29	6
30	6
31	6

	Dry (%)	Comfortable (%)
1	99	1
2	99	1
3	99	1
4	99	1
5	99	1
6	100	0
7	100	0
8	100	0
9	100	0
10	100	0
11	100	0
12	100	0
13	100	0
14	100	0
15	100	0
16	100	0
17	100	0
18	100	0
19	100	0
20	100	0
21	100	0
22	100	0
23	100	0
24	100	0
25	100	0
26	100	0
27	100	0
28	100	0
29	100	0
30	100	0
31	100	0

	Avg high (°F)	Avg low (°F)
1	72	49
2	72	49
3	72	49
4	72	48
5	71	48
6	71	48
7	71	48
8	71	48
9	71	47
10	70	47
11	70	47
12	70	47
13	70	47
14	70	47
15	69	47
16	69	47
17	69	46
18	69	46
19	69	46
20	69	46
21	69	46
22	69	46
23	69	46
24	68	46
25	68	46
26	68	46
27	69	46
28	69	46
29	69	46
30	69	46
31	69	46

	Clearer (%)	Cloudier (%)
1	77	23
2	77	23
3	77	23
4	77	23
5	77	23
6	76	24
7	76	24
8	76	24
9	76	24
10	77	23
11	77	23
12	77	23
13	77	23
14	76	24
15	76	24
16	76	24
17	75	25
18	76	24
19	76	24
20	76	24
21	75	25
22	75	25
23	75	25
24	74	26
25	74	26
26	74	26
27	72	28
28	73	27
29	73	27
30	72	28
31	72	28

	Rain chance (%)
1	5
2	5
3	5
4	5
5	5
6	5
7	5
8	5
9	5
10	5
11	5
12	5
13	5
14	5
15	5
16	5
17	5
18	5
19	5
20	5
21	5
22	5
23	5
24	5
25	5
26	5
27	5
28	6
29	6
30	6
31	6

	Dry (%)	Comfortable (%)
1	99	1
2	99	1
3	99	1
4	99	1
5	99	1
6	100	0
7	100	0
8	100	0
9	100	0
10	100	0
11	100	0
12	100	0
13	100	0
14	100	0
15	100	0
16	100	0
17	100	0
18	100	0
19	100	0
20	100	0
21	100	0
22	100	0
23	100	0
24	100	0
25	100	0
26	100	0
27	100	0
28	100	0
29	100	0
30	100	0
31	100	0

	Avg high (°F)	Avg low (°F)
1	72	49
2	72	49
3	72	49
4	72	48
5	71	48
6	71	48
7	71	48
8	71	48
9	71	47
10	70	47
11	70	47
12	70	47
13	70	47
14	70	47
15	69	47
16	69	47
17	69	46
18	69	46
19	69	46
20	69	46
21	69	46
22	69	46
23	69	46
24	68	46
25	68	46
26	68	46
27	69	46
28	69	46
29	69	46
30	69	46
31	69	46

	Clearer (%)	Cloudier (%)
1	77	23
2	77	23
3	77	23
4	77	23
5	77	23
6	76	24
7	76	24
8	76	24
9	76	24
10	77	23
11	77	23
12	77	23
13	77	23
14	76	24
15	76	24
16	76	24
17	75	25
18	76	24
19	76	24
20	76	24
21	75	25
22	75	25
23	75	25
24	74	26
25	74	26
26	74	26
27	72	28
28	73	27
29	73	27
30	72	28
31	72	28

	Rain chance (%)
1	5
2	5
3	5
4	5
5	5
6	5
7	5
8	5
9	5
10	5
11	5
12	5
13	5
14	5
15	5
16	5
17	5
18	5
19	5
20	5
21	5
22	5
23	5
24	5
25	5
26	5
27	5
28	6
29	6
30	6
31	6

	Dry (%)	Comfortable (%)
1	99	1
2	99	1
3	99	1
4	99	1
5	99	1
6	100	0
7	100	0
8	100	0
9	100	0
10	100	0
11	100	0
12	100	0
13	100	0
14	100	0
15	100	0
16	100	0
17	100	0
18	100	0
19	100	0
20	100	0
21	100	0
22	100	0
23	100	0
24	100	0
25	100	0
26	100	0
27	100	0
28	100	0
29	100	0
30	100	0
31	100	0